Double warp frame



Aug. 23, 1932 WAGNER 1,873,686

' DOUBLE WARP FRAME Filed Jan. 15, 1929 .ZZwu/enfaf:

2 a rial M ner Patented Aug. 23, 1932 1,873,686

UNITED STATES PATENT OFFICE FRIEDRICH WAGNER, F RUSSDORIE, NEAR OBERFROHNA, GERMANY DOUBLE WARP FRAME Application filed January 15, 1929, Serial No. 332,594, and in Germany January 23, 1928.

The present invention relates to a double threads 23 are to be placed on the needles warp frame provided with withdrawable 4, the sinkers or web-holders 1 move back sinkers and adapted to produce double-sided (Fig. 2) so that they are withdrawn comgoods. pletely during lapping (Fig. 3) and the last- 5 In the known types of double warp frames formed loops are held by the non-working the old loops land on the spring needles, needles of the other row without having an I which have been previously compressed by opportunity of shifting relative to thestem the presser bar, with the aid of sinkers arof the working needles. ranged between the needles. In order to The needles are of such a length as to per- 1 place the leases or laps on the spring needles, mit lapping when the sinkers are retracted the latter must be long enough and pushed from the needles and are of insuflicient addiup high enough between the sinkers to insure tional length to permit lapping when the safe landing of the new laps under the hook sinkers are advanced, and furthermore durof the needles, and this position determines ing the laying of the threads the fabric is the length of the needles. Even in cases held tight by the other row of needles near C0 where the sinkers were temporarily moved the securing parts of the needles so that it out of range of the needles, it was done durcannot be drawn up to the needle hook upon ing another phase of the working rhythm these needles. when shortening of the needles was not pos- I claim sible. A double warp frame comprising two banks The present invention eliminates these of needles and two banks of sinkers, each of drawbacks and enables operators to keep the said'banks of sinkers cooperating with and needles as short as is consistent with lapping. encroaching temporarily in one of the rows I attain this object by withdrawing the sinkof said needles, said sinkers adapted to be H ers or web-holders from the row of needles withdrawn from its corresponding row of before lapping takes place so that the leases needles when lapping takes place, said can be placed on the full length of the needle. needles being of such a length as to permit During the pressing step and the landing of lapping when the sinkers are retracted from the loops the entire. length of th needles i the needles and being of insufficient additionno longer required so that the sinkers can be all length 0 p m pping Wh the e s 5 pushed back between the needles for the are advanced, and during the laying of the knocking over and locking inprocess. My threads the fabric is held tight by the other invention permits shortening of the needles ow of nee e r he sec ring parts of the for the width of the sinkers, which increases needles S0 that it 0211111013 be drawn p 0 he materially the rigidity of the needles and reneedle hook p these es duces their wear and tear. In testimony whereof I have aflixed my The invention is illustrated in the accom- Signaturepanying drawing, in which Figs. 1 to 4: show FRIEDRICH WAGNER. diagrammatically the operation of the new i machine provided with short needles. Figure 1 shows the knocking over of a row of loops; Fig. 2 shows the phase in the knitting operation when the sinkers retract after having performed the knocking over operation and preparatory for the yarn guides to lap; Fig. 3 shows the position of the parts after lapping; and Fig. 4 shows the pressing of the needles. In Fig. 1 the sinkers 1 are within the range of the needles for the pur- 10b pose of locking in the loops. As soonas the 

